OK, let's crack this. We're given 357 and our task is to multiply it by 447. Essentially, we'll be adding 357 to itself 447 times.
Step 1: 0 + 357 = 357
Step 2: 357 + 357 = 714
Step 3: 714 + 357 = 1071
Step 4: 1071 + 357 = 1428
Step 5: 1428 + 357 = 1785
Step 6: 1785 + 357 = 2142
Step 7: 2142 + 357 = 2499
Step 8: 2499 + 357 = 2856
Step 9: 2856 + 357 = 3213
Step 10: 3213 + 357 = 3570
Step 11: 3570 + 357 = 3927
Step 12: 3927 + 357 = 4284
Step 13: 4284 + 357 = 4641
Step 14: 4641 + 357 = 4998
Step 15: 4998 + 357 = 5355
Step 16: 5355 + 357 = 5712
Step 17: 5712 + 357 = 6069
Step 18: 6069 + 357 = 6426
Step 19: 6426 + 357 = 6783
Step 20: 6783 + 357 = 7140
Step 21: 7140 + 357 = 7497
Step 22: 7497 + 357 = 7854
Step 23: 7854 + 357 = 8211
Step 24: 8211 + 357 = 8568
Step 25: 8568 + 357 = 8925
Step 26: 8925 + 357 = 9282
Step 27: 9282 + 357 = 9639
Step 28: 9639 + 357 = 9996
Step 29: 9996 + 357 = 10353
Step 30: 10353 + 357 = 10710
Step 31: 10710 + 357 = 11067
Step 32: 11067 + 357 = 11424
Step 33: 11424 + 357 = 11781
Step 34: 11781 + 357 = 12138
Step 35: 12138 + 357 = 12495
Step 36: 12495 + 357 = 12852
Step 37: 12852 + 357 = 13209
Step 38: 13209 + 357 = 13566
Step 39: 13566 + 357 = 13923
Step 40: 13923 + 357 = 14280
Step 41: 14280 + 357 = 14637
Step 42: 14637 + 357 = 14994
Step 43: 14994 + 357 = 15351
Step 44: 15351 + 357 = 15708
Step 45: 15708 + 357 = 16065
Step 46: 16065 + 357 = 16422
Step 47: 16422 + 357 = 16779
Step 48: 16779 + 357 = 17136
Step 49: 17136 + 357 = 17493
Step 50: 17493 + 357 = 17850
Step 51: 17850 + 357 = 18207
Step 52: 18207 + 357 = 18564
Step 53: 18564 + 357 = 18921
Step 54: 18921 + 357 = 19278
Step 55: 19278 + 357 = 19635
Step 56: 19635 + 357 = 19992
Step 57: 19992 + 357 = 20349
Step 58: 20349 + 357 = 20706
Step 59: 20706 + 357 = 21063
Step 60: 21063 + 357 = 21420
Step 61: 21420 + 357 = 21777
Step 62: 21777 + 357 = 22134
Step 63: 22134 + 357 = 22491
Step 64: 22491 + 357 = 22848
Step 65: 22848 + 357 = 23205
Step 66: 23205 + 357 = 23562
Step 67: 23562 + 357 = 23919
Step 68: 23919 + 357 = 24276
Step 69: 24276 + 357 = 24633
Step 70: 24633 + 357 = 24990
Step 71: 24990 + 357 = 25347
Step 72: 25347 + 357 = 25704
Step 73: 25704 + 357 = 26061
Step 74: 26061 + 357 = 26418
Step 75: 26418 + 357 = 26775
Step 76: 26775 + 357 = 27132
Step 77: 27132 + 357 = 27489
Step 78: 27489 + 357 = 27846
Step 79: 27846 + 357 = 28203
Step 80: 28203 + 357 = 28560
Step 81: 28560 + 357 = 28917
Step 82: 28917 + 357 = 29274
Step 83: 29274 + 357 = 29631
Step 84: 29631 + 357 = 29988
Step 85: 29988 + 357 = 30345
Step 86: 30345 + 357 = 30702
Step 87: 30702 + 357 = 31059
Step 88: 31059 + 357 = 31416
Step 89: 31416 + 357 = 31773
Step 90: 31773 + 357 = 32130
Step 91: 32130 + 357 = 32487
Step 92: 32487 + 357 = 32844
Step 93: 32844 + 357 = 33201
Step 94: 33201 + 357 = 33558
Step 95: 33558 + 357 = 33915
Step 96: 33915 + 357 = 34272
Step 97: 34272 + 357 = 34629
Step 98: 34629 + 357 = 34986
Step 99: 34986 + 357 = 35343
Step 100: 35343 + 357 = 35700
Step 101: 35700 + 357 = 36057
Step 102: 36057 + 357 = 36414
Step 103: 36414 + 357 = 36771
Step 104: 36771 + 357 = 37128
Step 105: 37128 + 357 = 37485
Step 106: 37485 + 357 = 37842
Step 107: 37842 + 357 = 38199
Step 108: 38199 + 357 = 38556
Step 109: 38556 + 357 = 38913
Step 110: 38913 + 357 = 39270
Step 111: 39270 + 357 = 39627
Step 112: 39627 + 357 = 39984
Step 113: 39984 + 357 = 40341
Step 114: 40341 + 357 = 40698
Step 115: 40698 + 357 = 41055
Step 116: 41055 + 357 = 41412
Step 117: 41412 + 357 = 41769
Step 118: 41769 + 357 = 42126
Step 119: 42126 + 357 = 42483
Step 120: 42483 + 357 = 42840
Step 121: 42840 + 357 = 43197
Step 122: 43197 + 357 = 43554
Step 123: 43554 + 357 = 43911
Step 124: 43911 + 357 = 44268
Step 125: 44268 + 357 = 44625
Step 126: 44625 + 357 = 44982
Step 127: 44982 + 357 = 45339
Step 128: 45339 + 357 = 45696
Step 129: 45696 + 357 = 46053
Step 130: 46053 + 357 = 46410
Step 131: 46410 + 357 = 46767
Step 132: 46767 + 357 = 47124
Step 133: 47124 + 357 = 47481
Step 134: 47481 + 357 = 47838
Step 135: 47838 + 357 = 48195
Step 136: 48195 + 357 = 48552
Step 137: 48552 + 357 = 48909
Step 138: 48909 + 357 = 49266
Step 139: 49266 + 357 = 49623
Step 140: 49623 + 357 = 49980
Step 141: 49980 + 357 = 50337
Step 142: 50337 + 357 = 50694
Step 143: 50694 + 357 = 51051
Step 144: 51051 + 357 = 51408
Step 145: 51408 + 357 = 51765
Step 146: 51765 + 357 = 52122
Step 147: 52122 + 357 = 52479
Step 148: 52479 + 357 = 52836
Step 149: 52836 + 357 = 53193
Step 150: 53193 + 357 = 53550
Step 151: 53550 + 357 = 53907
Step 152: 53907 + 357 = 54264
Step 153: 54264 + 357 = 54621
Step 154: 54621 + 357 = 54978
Step 155: 54978 + 357 = 55335
Step 156: 55335 + 357 = 55692
Step 157: 55692 + 357 = 56049
Step 158: 56049 + 357 = 56406
Step 159: 56406 + 357 = 56763
Step 160: 56763 + 357 = 57120
Step 161: 57120 + 357 = 57477
Step 162: 57477 + 357 = 57834
Step 163: 57834 + 357 = 58191
Step 164: 58191 + 357 = 58548
Step 165: 58548 + 357 = 58905
Step 166: 58905 + 357 = 59262
Step 167: 59262 + 357 = 59619
Step 168: 59619 + 357 = 59976
Step 169: 59976 + 357 = 60333
Step 170: 60333 + 357 = 60690
Step 171: 60690 + 357 = 61047
Step 172: 61047 + 357 = 61404
Step 173: 61404 + 357 = 61761
Step 174: 61761 + 357 = 62118
Step 175: 62118 + 357 = 62475
Step 176: 62475 + 357 = 62832
Step 177: 62832 + 357 = 63189
Step 178: 63189 + 357 = 63546
Step 179: 63546 + 357 = 63903
Step 180: 63903 + 357 = 64260
Step 181: 64260 + 357 = 64617
Step 182: 64617 + 357 = 64974
Step 183: 64974 + 357 = 65331
Step 184: 65331 + 357 = 65688
Step 185: 65688 + 357 = 66045
Step 186: 66045 + 357 = 66402
Step 187: 66402 + 357 = 66759
Step 188: 66759 + 357 = 67116
Step 189: 67116 + 357 = 67473
Step 190: 67473 + 357 = 67830
Step 191: 67830 + 357 = 68187
Step 192: 68187 + 357 = 68544
Step 193: 68544 + 357 = 68901
Step 194: 68901 + 357 = 69258
Step 195: 69258 + 357 = 69615
Step 196: 69615 + 357 = 69972
Step 197: 69972 + 357 = 70329
Step 198: 70329 + 357 = 70686
Step 199: 70686 + 357 = 71043
Step 200: 71043 + 357 = 71400
Step 201: 71400 + 357 = 71757
Step 202: 71757 + 357 = 72114
Step 203: 72114 + 357 = 72471
Step 204: 72471 + 357 = 72828
Step 205: 72828 + 357 = 73185
Step 206: 73185 + 357 = 73542
Step 207: 73542 + 357 = 73899
Step 208: 73899 + 357 = 74256
Step 209: 74256 + 357 = 74613
Step 210: 74613 + 357 = 74970
Step 211: 74970 + 357 = 75327
Step 212: 75327 + 357 = 75684
Step 213: 75684 + 357 = 76041
Step 214: 76041 + 357 = 76398
Step 215: 76398 + 357 = 76755
Step 216: 76755 + 357 = 77112
Step 217: 77112 + 357 = 77469
Step 218: 77469 + 357 = 77826
Step 219: 77826 + 357 = 78183
Step 220: 78183 + 357 = 78540
Step 221: 78540 + 357 = 78897
Step 222: 78897 + 357 = 79254
Step 223: 79254 + 357 = 79611
Step 224: 79611 + 357 = 79968
Step 225: 79968 + 357 = 80325
Step 226: 80325 + 357 = 80682
Step 227: 80682 + 357 = 81039
Step 228: 81039 + 357 = 81396
Step 229: 81396 + 357 = 81753
Step 230: 81753 + 357 = 82110
Step 231: 82110 + 357 = 82467
Step 232: 82467 + 357 = 82824
Step 233: 82824 + 357 = 83181
Step 234: 83181 + 357 = 83538
Step 235: 83538 + 357 = 83895
Step 236: 83895 + 357 = 84252
Step 237: 84252 + 357 = 84609
Step 238: 84609 + 357 = 84966
Step 239: 84966 + 357 = 85323
Step 240: 85323 + 357 = 85680
Step 241: 85680 + 357 = 86037
Step 242: 86037 + 357 = 86394
Step 243: 86394 + 357 = 86751
Step 244: 86751 + 357 = 87108
Step 245: 87108 + 357 = 87465
Step 246: 87465 + 357 = 87822
Step 247: 87822 + 357 = 88179
Step 248: 88179 + 357 = 88536
Step 249: 88536 + 357 = 88893
Step 250: 88893 + 357 = 89250
Step 251: 89250 + 357 = 89607
Step 252: 89607 + 357 = 89964
Step 253: 89964 + 357 = 90321
Step 254: 90321 + 357 = 90678
Step 255: 90678 + 357 = 91035
Step 256: 91035 + 357 = 91392
Step 257: 91392 + 357 = 91749
Step 258: 91749 + 357 = 92106
Step 259: 92106 + 357 = 92463
Step 260: 92463 + 357 = 92820
Step 261: 92820 + 357 = 93177
Step 262: 93177 + 357 = 93534
Step 263: 93534 + 357 = 93891
Step 264: 93891 + 357 = 94248
Step 265: 94248 + 357 = 94605
Step 266: 94605 + 357 = 94962
Step 267: 94962 + 357 = 95319
Step 268: 95319 + 357 = 95676
Step 269: 95676 + 357 = 96033
Step 270: 96033 + 357 = 96390
Step 271: 96390 + 357 = 96747
Step 272: 96747 + 357 = 97104
Step 273: 97104 + 357 = 97461
Step 274: 97461 + 357 = 97818
Step 275: 97818 + 357 = 98175
Step 276: 98175 + 357 = 98532
Step 277: 98532 + 357 = 98889
Step 278: 98889 + 357 = 99246
Step 279: 99246 + 357 = 99603
Step 280: 99603 + 357 = 99960
Step 281: 99960 + 357 = 100317
Step 282: 100317 + 357 = 100674
Step 283: 100674 + 357 = 101031
Step 284: 101031 + 357 = 101388
Step 285: 101388 + 357 = 101745
Step 286: 101745 + 357 = 102102
Step 287: 102102 + 357 = 102459
Step 288: 102459 + 357 = 102816
Step 289: 102816 + 357 = 103173
Step 290: 103173 + 357 = 103530
Step 291: 103530 + 357 = 103887
Step 292: 103887 + 357 = 104244
Step 293: 104244 + 357 = 104601
Step 294: 104601 + 357 = 104958
Step 295: 104958 + 357 = 105315
Step 296: 105315 + 357 = 105672
Step 297: 105672 + 357 = 106029
Step 298: 106029 + 357 = 106386
Step 299: 106386 + 357 = 106743
Step 300: 106743 + 357 = 107100
Step 301: 107100 + 357 = 107457
Step 302: 107457 + 357 = 107814
Step 303: 107814 + 357 = 108171
Step 304: 108171 + 357 = 108528
Step 305: 108528 + 357 = 108885
Step 306: 108885 + 357 = 109242
Step 307: 109242 + 357 = 109599
Step 308: 109599 + 357 = 109956
Step 309: 109956 + 357 = 110313
Step 310: 110313 + 357 = 110670
Step 311: 110670 + 357 = 111027
Step 312: 111027 + 357 = 111384
Step 313: 111384 + 357 = 111741
Step 314: 111741 + 357 = 112098
Step 315: 112098 + 357 = 112455
Step 316: 112455 + 357 = 112812
Step 317: 112812 + 357 = 113169
Step 318: 113169 + 357 = 113526
Step 319: 113526 + 357 = 113883
Step 320: 113883 + 357 = 114240
Step 321: 114240 + 357 = 114597
Step 322: 114597 + 357 = 114954
Step 323: 114954 + 357 = 115311
Step 324: 115311 + 357 = 115668
Step 325: 115668 + 357 = 116025
Step 326: 116025 + 357 = 116382
Step 327: 116382 + 357 = 116739
Step 328: 116739 + 357 = 117096
Step 329: 117096 + 357 = 117453
Step 330: 117453 + 357 = 117810
Step 331: 117810 + 357 = 118167
Step 332: 118167 + 357 = 118524
Step 333: 118524 + 357 = 118881
Step 334: 118881 + 357 = 119238
Step 335: 119238 + 357 = 119595
Step 336: 119595 + 357 = 119952
Step 337: 119952 + 357 = 120309
Step 338: 120309 + 357 = 120666
Step 339: 120666 + 357 = 121023
Step 340: 121023 + 357 = 121380
Step 341: 121380 + 357 = 121737
Step 342: 121737 + 357 = 122094
Step 343: 122094 + 357 = 122451
Step 344: 122451 + 357 = 122808
Step 345: 122808 + 357 = 123165
Step 346: 123165 + 357 = 123522
Step 347: 123522 + 357 = 123879
Step 348: 123879 + 357 = 124236
Step 349: 124236 + 357 = 124593
Step 350: 124593 + 357 = 124950
Step 351: 124950 + 357 = 125307
Step 352: 125307 + 357 = 125664
Step 353: 125664 + 357 = 126021
Step 354: 126021 + 357 = 126378
Step 355: 126378 + 357 = 126735
Step 356: 126735 + 357 = 127092
Step 357: 127092 + 357 = 127449
Step 358: 127449 + 357 = 127806
Step 359: 127806 + 357 = 128163
Step 360: 128163 + 357 = 128520
Step 361: 128520 + 357 = 128877
Step 362: 128877 + 357 = 129234
Step 363: 129234 + 357 = 129591
Step 364: 129591 + 357 = 129948
Step 365: 129948 + 357 = 130305
Step 366: 130305 + 357 = 130662
Step 367: 130662 + 357 = 131019
Step 368: 131019 + 357 = 131376
Step 369: 131376 + 357 = 131733
Step 370: 131733 + 357 = 132090
Step 371: 132090 + 357 = 132447
Step 372: 132447 + 357 = 132804
Step 373: 132804 + 357 = 133161
Step 374: 133161 + 357 = 133518
Step 375: 133518 + 357 = 133875
Step 376: 133875 + 357 = 134232
Step 377: 134232 + 357 = 134589
Step 378: 134589 + 357 = 134946
Step 379: 134946 + 357 = 135303
Step 380: 135303 + 357 = 135660
Step 381: 135660 + 357 = 136017
Step 382: 136017 + 357 = 136374
Step 383: 136374 + 357 = 136731
Step 384: 136731 + 357 = 137088
Step 385: 137088 + 357 = 137445
Step 386: 137445 + 357 = 137802
Step 387: 137802 + 357 = 138159
Step 388: 138159 + 357 = 138516
Step 389: 138516 + 357 = 138873
Step 390: 138873 + 357 = 139230
Step 391: 139230 + 357 = 139587
Step 392: 139587 + 357 = 139944
Step 393: 139944 + 357 = 140301
Step 394: 140301 + 357 = 140658
Step 395: 140658 + 357 = 141015
Step 396: 141015 + 357 = 141372
Step 397: 141372 + 357 = 141729
Step 398: 141729 + 357 = 142086
Step 399: 142086 + 357 = 142443
Step 400: 142443 + 357 = 142800
Step 401: 142800 + 357 = 143157
Step 402: 143157 + 357 = 143514
Step 403: 143514 + 357 = 143871
Step 404: 143871 + 357 = 144228
Step 405: 144228 + 357 = 144585
Step 406: 144585 + 357 = 144942
Step 407: 144942 + 357 = 145299
Step 408: 145299 + 357 = 145656
Step 409: 145656 + 357 = 146013
Step 410: 146013 + 357 = 146370
Step 411: 146370 + 357 = 146727
Step 412: 146727 + 357 = 147084
Step 413: 147084 + 357 = 147441
Step 414: 147441 + 357 = 147798
Step 415: 147798 + 357 = 148155
Step 416: 148155 + 357 = 148512
Step 417: 148512 + 357 = 148869
Step 418: 148869 + 357 = 149226
Step 419: 149226 + 357 = 149583
Step 420: 149583 + 357 = 149940
Step 421: 149940 + 357 = 150297
Step 422: 150297 + 357 = 150654
Step 423: 150654 + 357 = 151011
Step 424: 151011 + 357 = 151368
Step 425: 151368 + 357 = 151725
Step 426: 151725 + 357 = 152082
Step 427: 152082 + 357 = 152439
Step 428: 152439 + 357 = 152796
Step 429: 152796 + 357 = 153153
Step 430: 153153 + 357 = 153510
Step 431: 153510 + 357 = 153867
Step 432: 153867 + 357 = 154224
Step 433: 154224 + 357 = 154581
Step 434: 154581 + 357 = 154938
Step 435: 154938 + 357 = 155295
Step 436: 155295 + 357 = 155652
Step 437: 155652 + 357 = 156009
Step 438: 156009 + 357 = 156366
Step 439: 156366 + 357 = 156723
Step 440: 156723 + 357 = 157080
Step 441: 157080 + 357 = 157437
Step 442: 157437 + 357 = 157794
Step 443: 157794 + 357 = 158151
Step 444: 158151 + 357 = 158508
Step 445: 158508 + 357 = 158865
Step 446: 158865 + 357 = 159222
Step 447: 159222 + 357 = 159579

So, 357*447 = 159579